RU2523258C1 - Wedge clamp - Google Patents

Abstract

FIELD: machine building.

SUBSTANCE: wedge clamp comprises a movably connected casing, a sliding member with a drive and a pressing member. The sliding and pressing members are conjugated with each other along the flat surfaces inclined in respect to the movement direction. The pressing member is fitted by U-shaped clips, and the side surfaces of the sliding and pressing members are fitted by the grooves parallel to the inclined surfaces with the ends of the U-shaped clips being set in the grooves. The casing is made as an open box where the sliding and pressing members are installed and the sliding member can travel for the length providing for wedging out.

EFFECT: simplified clamp design.

4 cl, 4 dwg

Description

The invention relates to the field of engineering, in particular to devices for clamping the parts, and can find application in devices for securing goods on a vehicle using a wedge clamp.

Known [1. SU, a.s. No. 1684546] a unified wedge clamp for connecting pipes by clamping the surface of a cylindrical cavity formed by pipes. This clip contains a support, coupled to each other on flat inclined surfaces, and a movable slider and a clip pulled together by a bolt, and in the clip, the bolt hole is made with a radial clearance. It is possible to use a unified wedge clamp in devices for securing cargo on a vehicle.

The disadvantage of a unified wedge clamp [1] is the lack of the clamp ability to make a reciprocating motion. This disadvantage reduces the reliability of the clamp due to the possibility of sticking the clamp on the clamped surface when performing multiple fastening / release of the transported goods.

Known [2. SU, a.s. No. 467199] a wedge clamp with a reciprocating movement of the clip. This wedge clamp comprises a frame-type housing, a clamp and a slider connected by a rod to the drive, the housing, slider and clamp movably connected by means of combined protrusions and grooves, for example, T-shaped, made on the mating surfaces of the housing, slider and clamp. In [2], the drive through the rod provides a reciprocating movement of the slider, while the clamp in the housing also performs a reciprocating movement.

The disadvantage of a wedge clamp [2] is the design complexity due to the presence of a frame-type casing in the wedge clamp and the combined T-shaped protrusions and grooves on the mating surfaces of the casing, slide and clamp.

The wedge clamp [2] is taken as a prototype of the invention.

The aim of the invention is to simplify the design of the wedge clamp with reciprocating movement of the clip.

This goal is achieved in the proposed wedge clamp, which, similarly to the prototype, has movably connected housing, a slider with a drive and a clip, and the slider and clip are interconnected on a flat, inclined, to the direction of movement, surfaces. Unlike the prototype, the proposed wedge clamp is equipped with U-shaped brackets, and on the side surfaces of the slide and clamp parallel to the inclined surfaces, grooves are made in which the ends of the U-shaped brackets are laid. Another difference of the proposed wedge clamp from the prototype is that the body is made in the form of an open box in which a slider with a drive and a clamp are placed, with the possibility of moving the slider to a length that provides wedging. The movement of the clamp necessary for wedging is ensured by the fact that the length of the slider is less than the length of the clamp, and the length of the groove is greater than the width of the U-shaped bracket by an amount determined experimentally or by calculation. Unlike the prototype, in the proposed wedge clamp, the slider drive is made in the form of a bolt mounted in the holes on the end walls of an open box, passed through the hole in the clip and screwed into the slider, and the hole for the bolt in the clip is made with a radial clearance, the direction and size of which provide wedging. In order to protect the mating sliding surfaces from the ingress of litter, in the proposed wedge clamp on the lateral surfaces of the clamp and the slide along the area of the contour of movement of the U-shaped bracket, sampling was performed on the plate thickness of the U-shaped bracket. In the proposed wedge clamp, the bolt and U-shaped brackets in the grooves movably connect the open box, slider and clip, providing a reciprocating movement of the clip when screwing / unscrewing the bolt. In addition, an open box eliminates the possibility of U-shaped staples falling out of the grooves, restricts the movement of the slide and acts as a support for the clamp and bolt.

Figure 1 shows the overall design of the wedge clamp assembly, figure 2 is a view from the side of the bolt, figure 3 is the design of the U-shaped bracket, figure 4 is a longitudinal section of the wedge clamp.

In the figures, the numbers indicate: 1 - clip, 2 - slider, 3 - bolt, 4 - U-shaped bracket, 5 - groove, 6 - open box, 7 - selection. The movable clamp 1 and the slider 2 are conjugated, inclined to the direction of movement of the surface and are driven by a bolt 3 installed in the holes on the end walls of the open box 6. The position of the bolt 3 in the open box is fixed on one side by the support surface of the bolt head, and on the other by a cotter pin passed through a hole in the end of the bolt. The bolt 3 passes through the hole in the clip and screwed into the slider, and the hole for the bolt in the clip is made with a radial clearance, the direction and size of which provide wedging (figure 2 and figure 4). On the side surfaces of the clip and the slider there are grooves 5 parallel to the mating inclined surfaces of the clip and the slider. The ends of the U-shaped staples 4 (FIG. 3) are laid in these grooves, which movably connect the clip and the slider, providing a reciprocating movement of the clip during the reciprocating movement of the slider. In the proposed wedge clamp on the lateral surfaces of the clamp and the slide along the area of the contour of the movement of the U-shaped staples, a sample 7 is made on the thickness of the plate of the U-shaped bracket, which protects the mating sliding surfaces from litter from the side walls of the open box 6.

The work of the proposed wedge clamp is as follows. Screw the bolt 3 into the slider 2, while the bolt, resting its head on the end wall of the open box 6, moves the slider and, due to the interaction of the conjugate inclined surfaces of the slider and the clamp, pushes the clamp out of the open box. Unscrew the bolt 3 from the slider 2, while the bolt, resting the end cotter pin on the end wall of the open box 6, moves the slider and, due to the movable connection of the slider with the clamp with U-shaped brackets 4 in the grooves 5, pushes the clamp into the open box. Thus, in the reciprocating movement of the slider, the clamp also performs a reciprocating movement.

Replacing the T-grooves and protrusions on adjacent sliding surfaces in the wedge clamp with U-shaped brackets and grooves made on the lateral surfaces of the clamp and the slider, replacing the frame-type housing with a housing in the form of an open box, and making the drive of the slide in the form of a bolt significantly simplify the design wedge clamp with reciprocating clamp. In addition, the placement of the wedge clamp in the box provides protection against litter on the sliding surface, which increases reliability and increases the life of the wedge clamp. Thus, the achieved technical result in the proposed device is to simplify the design of the wedge clamp and to increase the reliability of its operation.

Information sources

1. SU, a.s. No. 1684546, IPC R16V 2/14, 7/14.

2. SU, a.c. No. 467199, IPC F16B 2/14, (prototype).

Claims (4)

1. A wedge clamp comprising movably connected housing, a slider with a drive and a clamp, the slider and the clamp being conjugated to each other on flat, inclined to the direction of movement, surfaces, characterized in that, in order to provide reciprocating motion of the clamp, equipped with P -shaped brackets, and on the side surfaces of the slide and the clamp parallel to the inclined surfaces, grooves are made in which the ends of the U-shaped brackets are laid, and the case is made in the form of an open box in which the slider and the clamp are placed with the ability to move the slider to a length that provides wedging. 2. The wedge clamp according to claim 1, characterized in that the length of the slider is less than the length of the clip, and the length of the groove is greater than the width of the bracket by an amount providing wedging. 3. The wedge clamp according to claim 2, characterized in that the drive is made in the form of a bolt installed in the holes on the end walls of the open box, passed through the hole in the clip and screwed into the slider, and the hole for the bolt in the clip is made with a radial clearance, direction and the value of which is provided by wedging. 4. The wedge clamp according to claim 3, characterized in that on the lateral surfaces of the slider and the clamp along the area of the movement contour of the U-shaped bracket, sampling is made for the plate thickness of the U-shaped bracket.

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